English Amiga Board


Go Back   English Amiga Board > Support > support.Hardware

 
 
Thread Tools
Old 16 July 2008, 01:10   #81
Photon
Moderator
Photon's Avatar
 
Join Date: Nov 2004
Location: Hult / Sweden
Posts: 4,591
Might just go and paint my whole A600 matte black to match the TFT... I know where all the keys are anyway 8)

Any suggestions as to what paint to get that gives good results on plastic?
Photon is offline  
Old 16 July 2008, 02:52   #82
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
I wanted to make something radical to my 1200, maybe to wrap the top case in decalcs from game title covers or amiga magazine covers,(using inkjet transfer paper,and some transparent varnish to cover it all), and for the bottom case, i could just paint it in metalized dark grey, or i could just paint it all in metallic dark grey, carshops usually do those paint jobs quite well...although a bit expensive too...
Yoto is offline  
Old 16 July 2008, 16:44   #83
chiark
Needs a life

chiark's Avatar
 
Join Date: Jan 2008
Location: England
Posts: 1,629
Well, I went to try and buy some.

Boots stock 6%. Sainsburys have 3%.

Worryingly, a google search for hydrogen peroxide had a sponsored link from the British Police saying "Suspicious? REPORT IT!"... I can't help but feel that asking for 20-30% H2O2 is drawing attention, even in the small volume I want to bleach the 4000 front back to minty freshness!
chiark is offline  
Old 16 July 2008, 17:03   #84
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
Really! Here in my country the old ladies buy 60% H2O2 and put 3 single drops in their tea!They are not very smart but at least they make it to the 100 years old...LOL
Yoto is offline  
Old 16 July 2008, 17:41   #85
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 56
Posts: 1,163
@ Chiark

If you really need some, I'm not too far away from you, perhaps we could arrange a meet somewhere between us, as long as MI5 aren't watching LOL
Merlin is offline  
Old 16 July 2008, 17:58   #86
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
And you could Codename it: 7UP
Yoto is offline  
Old 17 July 2008, 02:50   #87
Magno Boots
Zone Friend
 
Join Date: Feb 2006
Location: Hertfordshire
Posts: 685
@ Chiark

I couldn't obtain anything stringer than 6% either but don't worry as this works fine. Just a little more time is required.

Two 6% bottles from tesco left in a jar for five days in the sun produced fantastic results.

Infact the keys turned out brighter than the case I have just painted (white primer only with lacquer finish).

This 600 was actually banana coloured one week ago... really.. no kidding, it was close to being binned.

The grey keys were only in for one day and need another blast.

See current picture..

Attachment 17174

BTW has anyone got a spare Z key as mine has gone walkies?

Good luck guys.

Last edited by Magno Boots; 18 September 2008 at 00:04.
Magno Boots is offline  
Old 17 July 2008, 02:54   #88
Zetr0
Ya' like it Retr0?
Zetr0's Avatar
 
Join Date: Jul 2005
Location: United Kingdom
Age: 44
Posts: 9,768
@Magno

Looks fantastic m8

PM me you deets my friend and a 'Z' will be in the post
Zetr0 is offline  
Old 17 July 2008, 06:15   #89
rkauer
I hate potatos and shirts
rkauer's Avatar
 
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 52
Posts: 3,482
Send a message via MSN to rkauer Send a message via Yahoo to rkauer
@Magno: You painted the badge? Mine have the C= logo metallic!
rkauer is offline  
Old 17 July 2008, 11:52   #90
chiark
Needs a life

chiark's Avatar
 
Join Date: Jan 2008
Location: England
Posts: 1,629
@Magno,
Excellent result! I'll go and get the 6% then. The only thing I'm confused about is this thing called "sun" - what's that? I live in the North

@Merlin
Thanks for the offer - I'll try the 6%

@Yotoxionomai
I've found 35% available online classed as "food grade" - bloody weird. I might order some...

I'll try the face of a 4000 in the 6% stuff... Tempted to mask a bit off, but I know that if I do that I'll never get it to be the same as the other bits!
chiark is offline  
Old 17 July 2008, 13:09   #91
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
The process involved in reversing the yellowing is very impressive, i wonder...since rich oxigen reverses the process, then the plastic yellowing agent should be related to carbon dioxide, rather than UV or acid compounds.
In another approach, CO2 turns water a bit acid, known as carbonic acid, (like the humidity in our fingers and in air), and that may well be why some amiga plastic parts react to CO2 in its acid form or H2CO3 so H2O2 seems to somehow neutralize and reverse it.
Well, the CO2 above statements are wrong, H2O2 creates a process that releases the O2 in plastic...how i´m not sure...

Last edited by Yoto; 17 July 2008 at 14:08.
Yoto is offline  
Old 17 July 2008, 13:34   #92
zipper
Registered User
 
Join Date: Mar 2004
Location: finland
Posts: 1,477
What about a common household bleach - has anyone tried it? I did use it on yellowed ice box handles; wet rugs with bleach wrapped round and then plastic over it to keep it moist. Quite efficient in 24 hours but a perfect result had required probably another handling/more time.
zipper is offline  
Old 17 July 2008, 13:35   #93
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
@ Chiark
There is good reason why they peroxide is dangerous, specially if mixed with acetone and sulfuric acid, its a common and cheap explosive.(But also too unstable)
Yoto is offline  
Old 17 July 2008, 13:42   #94
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
@zipper
Bleach is good to eat thru organic material, and its corrosive so i guess it could speed up the yellowing process, having the opposite result! ( But a test surely wont hurt)

See also:
http://www.vintagecomputing.com/index.php/archives/189

Last edited by Yoto; 17 July 2008 at 14:30.
Yoto is offline  
Old 17 July 2008, 13:50   #95
zipper
Registered User
 
Join Date: Mar 2004
Location: finland
Posts: 1,477
Quote:
Originally Posted by Yotoxionomai View Post
@zipper
... and its acid so
Nope, base. NaOHCl, sodium hypochlorite usually. Don't remember the exact pH but 12.5 or thereabouts.
zipper is offline  
Old 17 July 2008, 14:14   #96
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
@Zipper
There are both oxydizing bleaches and reducing bleaches so in reality, bleach can be acid or base depending on the type, but my english is not perfect sorry... i changed acid to corrosive

Last edited by Yoto; 17 July 2008 at 14:30.
Yoto is offline  
Old 17 July 2008, 14:28   #97
zipper
Registered User
 
Join Date: Mar 2004
Location: finland
Posts: 1,477
Well, I wouldn't call the acid ones as bleach - even if my toilet may look cleaner after a handling. Bleaching needs (mostly) oxidizing potential IMO.
The reducing ones are not so familiar - but as a paper factory using it is hereabouts, I do know them.
zipper is offline  
Old 17 July 2008, 14:36   #98
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
Ok, you can try bleach i guess, but wont it remove the letter stamping on keyboard keys?
Yoto is offline  
Old 17 July 2008, 14:39   #99
zipper
Registered User
 
Join Date: Mar 2004
Location: finland
Posts: 1,477
Life is dangerous...
zipper is offline  
Old 17 July 2008, 14:42   #100
Yoto
1 Potato to Spam´em all!
Yoto's Avatar
 
Join Date: May 2008
Location: Lost in a Wine Country
Age: 42
Posts: 572
So are Winters in Finland!
Yoto is offline  
 


Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
A500+ Colour / Yellowing? craggus2000 support.Hardware 25 22 November 2010 10:24
Removing Yellowing using H2O2, TAED & UV alexh support.Hardware 31 22 February 2010 00:48
Guide to removing yellowing of plastics tonyyeb support.Hardware 38 28 November 2009 20:23
Partial yellowing? Akira support.Hardware 21 04 July 2008 01:46
Yellowing BippyM support.Hardware 56 03 January 2003 21:08

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 06:59.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Page generated in 0.10432 seconds with 14 queries